Marine Weather and Tides
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 6:52AM||Sunset 6:43PM||Tuesday September 29, 2020 10:36 PM CDT (03:36 UTC)||Moonrise 5:20PM||Moonset 3:26AM||Illumination 96%|
7 Day Forecast for Marine Location Near La Valle, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 300224 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 924 PM CDT Tue Sep 29 2020
UPDATE. (Issued 923 PM CDT Tue Sep 29 2020)
First batch of light showers associated with weak mid-level short wave has moved off to the east, but a few more light showers will be affecting the northeast CWA next few hours due to warm air advection ahead of approaching stronger mid-level short wave. This second wave will bring more showers to southern WI late tonight into Wednesday morning. More clouds than clearing are expected during the overnight, so temperatures looking in good shape.
SHORT TERM. (Issued 353 PM CDT Tue Sep 29 2020)
Tonight through Thursday:
A few showers will swing through through early evening as a shortwave moves through, with some clearing possible later tonight.
Shortwaves will then move through early Wednesday and then again Wednesday night into Thursday, bringing a couple rounds of showers to southern Wisconsin. The best chance for showers tomorrow will be during the morning into early afternoon, with the best chance Thursday during the afternoon. Not out of the question for a rumble or two of thunder both days. Below normal temperatures will continue, with some frost possible Thursday night.
LONG TERM. (Issued 353 PM CDT Tue Sep 29 2020)
Friday through Tuesday:
High pressure will bring a break to the showery pattern on Friday, with some sunshine even possible. A cool airmass will be in place though, so highs will struggle up to around 50. Frost will be possible again Friday night.
Models are in decent agreement showing a stronger system moving through the area later Saturday into Sunday. This would likely bring higher chances of rain with it along with more clouds and continued below normal temps.
Early next week looks mainly dry with moderating temperatures.
AVIATION. (Issued 923 PM CDT Tue Sep 29 2020)
A few more light showers will affect the northeast CWA the next few hours. More widespread showers and lower ceilings will affect southern WI late tonight and mostly Wednesday morning. Ceilings may drop to MVFR for a time behind passing cold front later on Wednesday.
MARINE. (Issued 353 PM CDT Tue Sep 29 2020)
Low pressure will pass by just north of Lake Michigan tonight into Wednesday. Breezy west to northwest winds and scattered showers are expected across the Lake tonight into Wednesday. The strongest winds will likely be from mid-morning Wednesday into mid-evening. A Small Craft Advisory has been issued for this period and gusts could approach gale force across the southern half of the lake.
A strong cold front will then move through the region late Wednesday bringing brisk north to northwesterly winds across the lake through Friday along with more shower chances through Thursday. The colder air moving over the warmer lake waters will bring a potential for waterspouts on Thursday and Friday.
MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . Small Craft Advisory . LMZ643-LMZ644-LMZ645-LMZ646 . 10 AM Wednesday to 10 PM Wednesday.
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|Baraboo Wisconsin Dells Airport, WI||16 mi||42 min||WSW 4||10.00 mi||Mostly Cloudy||47°F||44°F||92%||1005.8 hPa|
Link to 5 minute data for KDLL
Wind History from DLL (wind in knots)
|1 day ago||SW||W||SW||W||Calm||W||W||W||W||W||NW||NW||NW||NW|
|2 days ago||SW|
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.